Would it be this calc??
Units of Momentum and Impulse
Impulse, being the product of force and time, has units Ns. Momentum, we discovered this morning, has units of kgm/s. Since our equation states that changes in momentum are equal to the applied impulse, it follows that Ns must be equivalent to kgm/s. However, by convention, when talking about momentum we will always express our answers in units of kgm/s and when talking about impulse we will always use Ns.
Calculations using the Momentum-Impulse Theorem
Example:
What is the force applied to a 6.56 kg bowling ball that is taken from rest to a speed of 1.16 m/s in 1.31 s?
In this problem, we are given the following information:
m = 6.56 kg
vi = 0 m/s
vf = 1.16 m/s
t = 1.31 s
and need to find the force. We can rearrange F t = mv, to get
F = mv/t
Remembering that v in this case represents the change in velocity, we can substitute to get:
F = 6.56 kg • (1.16 – 0 m/s) / 1.31 s
F = 5.81 kg • m/s/s (three significant figures)
But, 1 kg ? m/s/s equals a Newton (N), our standard unit of force, so we would express our final answer as:
F = 5.81 N